1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b98dd5adee7bd6c51ccc8a506780889d8757a398a5c1966aab51c3e9d8c891c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b2ee259-0529-496b-ad37-2885d53a38d2.json and https://artists.proofprofile.net/proofs/artist/2b2ee259-0529-496b-ad37-2885d53a38d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e81864acf383ec69112135ff1580dc3eaa01aed7e8f57675320cfa58ad7c20f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:54:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ62291723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bf09adac2666abfe905c64b8aaaa588a45bc8008db1f7779785f9e9c3bb7f9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2453525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56358c2e4a505119f0317ec15bba86eb694499333f4277711deff8a9dc571c90. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2453526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a59ef43cea11556d9b1204c2345bd2962590903723a46e00330fc994b3a20a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2464652.
Mundos Paralelos EP (Edition Que Suene La Bala)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe31681962c5112cb08432b9ac81982dc01f1fd0f1a932fe79adcc54647e41f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZG2X2410165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbef27df63677637ba687b8c2848edfb46c21039e2a298cc377175ac100da76. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZG2X2410169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b92bd5a0600ec478904f5e27869bfdd61765d33502f28a13d8703b661e9af9. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:04:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZG2X2410175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8642ac2f96b415ba12ced9aa339e8662aa64572ac72b2c1c62b95b4bf8ab14. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:22:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZG2X2412765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48768738a137fa2bd9aac03ecea575eca6c282b4f514f693399e10e761fced9. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZG2X2419486.
El Maestro De La Bala (Brahian Rodriguez DJ Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedf4ca5c654640bb36c201f7f688a1ac9dedc06aaa2ea13a4e5cd5ad826f3bb. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2589215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b03a91f1d15fd6501d48d28c08d2ed031f647697540bfb61489dcbaf778e7a. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZG2X2503987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ac5c7e776c38b7ddc4579798a7ffe23e1e5d9d74b9465bbb0acf80398cb4eb. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZG2X2504496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca71265c25634692bba5434684773a4605505a2930dde24801a2a80fb7efcbba. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZG2X2506019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cad238470fe02603c14c5527a33f8bad58ed4e66907a22bd5b68face0ad6653. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZG2X2506164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a807e83230862ae96b7e4bcef92e8433255e17aa2c7865b86334fb1059e634a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:50:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZG2X2508379.